Finding the Fourth Proportional to 1,146.23, 1,581.81 and 622.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.23 : 1,581.81 = 622.27 : x
2. Step 2: Convert to fraction form
   1,146.23/1,581.81 = 622.27/x
3. Step 3: Cross multiply
   1,146.23x = 1,581.81 × 622.27
4. Step 4: Simplify right side
   1,146.23x = 984,307.16
5. Step 5: Solve for x
   x = 984,307.16/1,146.23
6. Step 6: Final answer
   x = 858.73